涡轮增压器压气机蜗壳型线变化的性能研究  

Performance research of volute profile for turbocharger compressor

作　　者：包佳勇 童正明[1] 王琦玮[2] 水小波 

机构地区：[1]上海理工大学能源与动力工程学院,上海200093 [2]同济大学汽车学院,上海201804

出　　处：《能源工程》2016年第2期75-79,共5页Energy Engineering

摘　　要：利用数值模拟的方法,研究蜗壳形状对涡轮增压器压气机性能的影响。根据蜗壳成型方法(C_ur^x=const,0≤x≤1),取不同的x经验数值(x=0、0.2、0.4、0.6、0.8、1),建立6个蜗壳模型分别与某叶轮的组合性能进行了计算。得到了设计转速下的流量与整机效率及压比的特性曲线并进行比较。分析了靠近设计工况点的叶轮、扩压器及蜗壳流道内的气体流动特性和压比分布。结果表明:在一定范围内x增大,能使流量增大,效率提高,抑制流动分离。本例中x取0.8时总体性能较优。Using numerical simulation method,the effect of the spiral shape on the turbocharger compressor was studied. According to the design rule（ C_ur^x= const,0≤x≤1）,six volute models were built by different x（ x = 0、0. 2、0. 4、0. 6、0. 8、1） and performance curve of the impeller and volute was computed. Efficiency-mass flow curve was compared with total pressure ratio-mass flow curve. The gas flow characteristics and pressure distribution of impeller,diffuser and volute were analyzed. The results showed that increasing of x within certain range could inhibit separate flow and improve efficiency of impeller.

关 键 词：涡轮增压器 流场分析 数值模拟 

分 类 号：TK411.8[动力工程及工程热物理—动力机械及工程]